Results 151 to 160 of about 5,722,673 (193)

A novel lead(II) framework containing Pb–O–Pb and Pb–Cl–Pb helical chains

Inorganic Chemistry Communications, 2008
Abstract Under hydrothermal conditions, using 5-methyl-pyrazine-2-carboxylic acid (HL) and lead(II) chloride, a new 2D lead(II) framework [Pb(L)(μ2-Cl)(H2O)]n can be isolated, in which infinite Pb–O–Pb helical chains can be observed. Interestingly 1 stacks in ABAB… ways, in one layer right-handed Pb–O–Pb and left-handed Pb–Cl–Pb helical chains are ...
Bin Ding, En-Cui Yang, Jian-Hua Guo, Xiao-Jun Zhao, Xiu-Guang Wang   +4 more
openaire   +1 more source

High-pressure and high-temperature transformation of Pb( ii )-natrolite to Pb( ii )-lawsonite

Dalton Transactions, 2016
We report on high-pressure and high-temperature chemical transformations of Pb 2+ -exchanged natrolite (Pb-NAT, Pb 8 Al 16 Si 24 O 80
Junhyuck, Im, Yongmoon, Lee, Douglas A, Blom, Thomas, Vogt, Yongjae, Lee   +4 more
openaire   +2 more sources

Resource utilization of swine sludge to prepare modified biochar adsorbent for the efficient removal of Pb(II) from water

Journal of Cleaner Production, 2020
Nowadays lead pollution in water becomes more challenging since the emission of automobile exhaust dust and the wastewater of several lead-manufacture industries. In this study, piggery sludge was utilized to prepare biochar and modified with thiourea to
Junhong Liu, Zhujian Huang, Ziying Chen, Jie Sun, Yuhan Gao, Enya Wu   +5 more
semanticscholar   +1 more source

Cystine-modified biomass for Cd(II) and Pb(II) biosorption

Journal of Hazardous Materials, 2007
The surface of dried biomass of baker's yeast was modified by crosslinking cystine with glutaraldehyde. X-ray photoelectron spectroscopy and microscope were used to characterize the modified biomass. The adsorption capacity of the modified biomass for Cd(2+) and Pb(2+) showed an increase compared with the pristine biomass due to the presence of cystine
Junxia, Yu, Mi, Tong, Xiaomei, Sun, Buhai, Li   +3 more
openaire   +2 more sources

One-pot synthesis of magnetic graphene oxide composites as an efficient and recoverable adsorbent for Cd(II) and Pb(II) removal from aqueous solution.

Journal of Hazardous Materials, 2020
It is extremely desirable but challenging to develop a facile synthesis method to directly prepare reusable and longtime stable magnetic graphene oxide (GO) adsorbent.
S. Bao, Weiwei Yang, Yingjun Wang, Yongsheng Yu, Yinyong Sun   +4 more
semanticscholar   +1 more source

Mechanism study about the adsorption of Pb(II) and Cd(II) with iron-trimesic metal-organic frameworks

, 2020
This study examined the effects of two kinds of iron-trimesic metal-organic frameworks (MOFs) [MIL-100(Fe) and Fe-BTC] on adsorption of Pb(II) and Cd(II).
Bao-Lin Zhang, W. Qiu, Panpan Wang, Yu-lei Liu, Jing Zou, Lu Wang, Jun Ma   +6 more
semanticscholar   +1 more source

Adsorption of Pb(II) from aqueous solutions using crosslinked carboxylated chitosan/carboxylated nanocellulose hydrogel beads

Journal of Molecular Liquids, 2020
Chitosan modification is an important method for the development of adsorbents that has attracted considerable interest in recent years. In this regard, a new type of efficient Pb(II) adsorbent was prepared in a simple and cost-effective way.
Xinyi Xu, Xiao–kun Ouyang, Li-ye Yang
semanticscholar   +1 more source

Facile fabrication of hydroxyapatite-magnetite-bentonite composite for efficient adsorption of Pb(II), Cd(II), and crystal violet from aqueous solution

, 2020
This study reports a facile fabrication route for hydroxyapatite (HAp) nanoparticles impregnated magnetic bentonite (HAp@Fe3O4@bentonite) composite, which was in turn applied for the removal of Pb(II), Cd(II) and crystal violet (CV) dye from aqueous ...
Qurat Ul Ain, Hanbing Zhang, M. Yaseen, Usman Rasheed, Liu Kun, Sidra Subhan, Z. Tong   +6 more
semanticscholar   +1 more source

Structure extension in two Pb(II)–sulfonate complexes from hemidirected to holodirected Pb(II) by secondary Pb–O interactions

Inorganic Chemistry Communications, 2014
Abstract Two novel Pb(II) complexes, [Pb(HL1)(2,2′-bpy)(MeOH)]n, (HL1 = 2-hydroxyl-5-methyl-1,3-disulfonate dianion) (1) and [Pb1.5(OH)(L2)]n, (L2 = 2-hydroxyl-5-nitro-benzenesulfonate dianion) (2), involving ortho-hydroxyl arenesulfonic acids, have been synthesized and characterized for the first time.
Xin Zou, Li-Hua Huo, Zhao-Peng Deng, Hui Zhao, Shan Gao   +4 more
openaire   +1 more source

Hydration Properties of Aqueous Pb(II) Ion

Inorganic Chemistry, 2008
Using density functional theory and polarized continuum models, we have determined the most probable coordination number and structure of the first hydration shell of aqueous Pb(II). The geometries and hydration free energies of Pb(H2O)(1-9)(2+) were examined and benchmarked against experimental values. The free energies of hydration of Pb(H2O)(6-8)(2+)
Matthew C F, Wander, Aurora E, Clark
openaire   +2 more sources